In which of the following sets do all species have the same number of protons?
A) At-,Rn,Ra2+
B) C,N3-,O2-
C) CO3+,Rh3+,Ir3+
D) Br,Co2+,Co3+
Correct Answer:
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Q190: The number of atoms of carbon in
Q191: How many electrons are in the ion,S2-?
A)14
B)18
C)30
D)34
Q193: In which of the following sets do
Q194: Iodine is an example of
A)a compound.
B)an element.
C)a
Q195: Ethane is an example of
A)a compound.
B)an element.
C)a
Q196: What is the standard isotope that is
Q197: Hydrochloric acid is an example of
A)a compound.
B)an
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